Comments on: LEGO Mindstorms Sudoku Solver

By: lego mindstorm nxt

lego mindstorm nxt — Mon, 19 Dec 2011 18:02:07 +0000

Mindstorms is my fave… especilly the new stuff

By: lego mindstorm nxt

lego mindstorm nxt — Mon, 19 Dec 2011 17:25:35 +0000

lego rocks!

By: Concino

Concino — Wed, 20 Jan 2010 20:00:37 +0000

Wow, I sold my NXT kit thinking that the accuracy on its servos were pretty bad. Well, I guess it was me and not the NXT that sucked… :( I am depressed now.

By: Tim

Tim — Tue, 15 Sep 2009 00:02:06 +0000

Google “Flying Blade of Amputation” to see one of National Instruments’ keynote presentations. They designed labVIEW, the visual programming language that LEGO Mindstorms uses (simplified for kids, of course).

By: eric

eric — Fri, 28 Aug 2009 07:11:24 +0000

he’s got the source from the rubik’s cube robot posted now too. i followed his build instructions and made my own(rubik’s cube robot) over the break last christmas. it worked pretty well though you need a looser cube for ideal performance.

By: jeff-o

jeff-o — Tue, 25 Aug 2009 13:01:24 +0000

Yeah, the fact that this is made of LEGO just pushes it over the top! Fantastic!

By: strider_mt2k

strider_mt2k — Tue, 25 Aug 2009 12:59:10 +0000

That is some incredible work.

Coupled with the fact that this is made with lego mindstorms, it’s jaw-droppingly awesome!

WOW I…I just…look at it when…wow!

By: jon

jon — Tue, 25 Aug 2009 06:59:47 +0000

That thing has way better handwriting than I do… and it’s faster at Sudoku too. Guess I will be the first one up against the wall when the robot uprising comes…

By: ProGamingLife.com

ProGamingLife.com — Mon, 24 Aug 2009 22:56:08 +0000

I was unimpressed until 3:21 at which point I shat myself. I appreciate the work it’s doing and how, relatively, cheap the parts are involved, but your average everyday Asian could do this faster.

(Racism added for the purpose of humor only.)

By: laube

laube — Mon, 24 Aug 2009 19:32:35 +0000

wow great work..
a year back i have done a similar robot.
unfortunately there isn’t a lot of documentation around..
just a really boring youtube video.
writing: http://www.youtube.com/watch?v=pJRbTO8Ffx0&feature=channel
full: http://www.youtube.com/watch?v=UB2EncsBuHQ&feature=channel
maybe i’ll create a writeup once but basically it is a setup similar to a plotter which scans the blocks of the puzzle with the light sensor. the light sensor is modified so that its field of view is very narrow. (the sensor is isolated from ambient light, and then the beam of the led is narrowed down with a small tube so it enlightens only a small spot on the paper)
the robot scans a 12×12-pixel image and processes it with some sharpening algorithm and then performs a very primitive ocr-algorithm on it. (comparing to reference-images)
the solution is then calculated and the result is written with the attached pen.
the whole thing is implemented with several threads so that the ocr can run in the background while the next image is scanned.

the plotter approach has been chosen because all the other approaches were too loose.

thats why i admire this guys work, since he managed to get it working with a setup which has a lot of inaccuracies.

By: Jack

Jack — Mon, 24 Aug 2009 17:35:35 +0000

Needs at least 5 arduinos to be interesting….

jk. Looks interesting, I can’t wait for a writeup :)

By: kcendraeb

kcendraeb — Mon, 24 Aug 2009 16:13:20 +0000

Oh this looks excellent, I love LEGO NXT’s, it’s a welcome change from Arduino’s.

By: daryl

daryl — Mon, 24 Aug 2009 15:45:56 +0000

So wait, a guy made a puzzle to waste time/exercise the brain (whichever view you take of puzzles like this) and some guy made a robot so people don’t have to do the puzzles? I’m in!

By: DU

DU — Mon, 24 Aug 2009 15:16:35 +0000

No. Way.